TXT crawler electronics

[Jeepernick]

What Im looking at running in my TXT Crawler on MoabXLs:

The Goat Brushless Crawler Motor and ESC System Combo
Traxxus TQ3 w/rear steer
2 x Hitec HS-5955 Titanium Servos (front and rear)
Split 7 cell Elite Batteries 4500mah


Is the BEC good enough to get the most out of those servos?... I would love to see 333oz turning power

Is that enough power?

Other items:
I have txt axles with MIP CVDs
R2HD tranny

Soon will have alum knuckles



Any additional thoughts very welcome

Thanks

[Jeepernick]

I know I didnt ask any questions that couldnt have been answered,

[Grizzly4x4]

Two 5955 servos is asking alot of the internal BEC. It may work, but it's prolly not going to work very well once the tires are in a bind.
I'd go straight for a voltage regulator or CCBEC if I were building it.

[Jeepernick]

K kinda of what I was thinking, and the CCBECs arent going to break my bank so.


I was just thinking because the rear steer only really gets used when you need it that would save the BEC power, but I guess if you are turning front and rear at the same time then it would be a problem.


so what is better to run, voltage regulator or CCBEC ?

I dont know really anything about the voltage regulator (*starts searching*)

Thanks

[Grizzly4x4]

Originally Posted by Jeepernick

K kinda of what I was thinking, and the CCBECs arent going to break my bank so.


I was just thinking because the rear steer only really gets used when you need it that would save the BEC power, but I guess if you are turning front and rear at the same time then it would be a problem.


so what is better to run, voltage regulator or CCBEC ?

I dont know really anything about the voltage regulator (*starts searching*)

Thanks

If you were running a 7.2V main pack, the MPI ACC234 voltage regulator would be good for 16.7A of servo power if you set it to 6V. With your 8.4V battery the MPI will be good for 8.3A if you set it to 6V, and 10.5A if you set it to 6.5V. This may be a little less than the CCBEC on paper, but if you mount it to the alumunim chassis for better heat dissapation you can push it pretty hard. Several guys mention running two big servos off of it in this thread. Link.

Of course, the CCBEC is a very stout unit as well and is rated for 10A and has been proven by JRH to handle alot of stress.

I just mentioned the Voltage Regulator to bring up other options. I currently run the MPI in my 2.2 rock racer with a 5955 servo up front and a 645 in the rear. I also have a CCBEC in my 2.2 comp crawler running a 5998TG. They both work great.

[Jeepernick]

Thanks for the info Griz

I think I will run the CCBEC and if that doesnt cut it then try something else

But thanks again for opening up other options

[bustedcrawler]

I have been running 5 2/3A cell Rx packs to power servos. 1x Rx pack per Hitec 5995 servo, tons of power and speed. With my new set-up I am going with a CCBEC as I dont have the room for the Rx packs.

The 333oz of torque is at 6V, so you will need a BEC set to 6V to see that kind of power.

[Jeepernick]

so for less weight it would be better just to run the CCBEC over the Rx pack and it will still power the 6v needed ?

how are you running a Rx pack per servo? dont the Rx packs just connect to the res. , there is only one connection

sorry im so noob

[hairba11]

Originally Posted by Jeepernick

I was just thinking because the rear steer only really gets used when you need it that would save the BEC power, but I guess if you are turning front and rear at the same time then it would be a problem.

even if you aren't steering the rear, there is also a theoretical 333 ozin of torque available trying to keep the rear wheels straight, so you will be using power even if you are not directly controlling it.

[Jeepernick]

Originally Posted by hairba11

even if you aren't steering the rear, there is also a theoretical 333 ozin of torque available trying to keep the rear wheels straight, so you will be using power even if you are not directly controlling it.

True.... LOL I dont know what I was thinking when I typed that

I laugh at meself